EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Weighted Average Number of Shares, excluded from computation										800	1,300
Income from continuing operations- basic and diluted	$ 11,758	$ 1,058	$ 1,822	$ 1,340	$ 5,478	$ (16,841)	$ 4,854	$ 1,111	$ 15,978	$ (5,398)	$ (10,968)
Weighted average shares outstanding-basic									47,908	48,319	51,402
Weighted Average Number of Shares, Contingently Issuable									322	0
Weighted average diluted shares outstanding									48,230	48,319	51,402
Basic earnings (loss) per share (in dollars per share)	$ 0.24	$ 0.02	$ 0.04	$ 0.03	$ 0.12	$ (0.35)	$ 0.10	$ 0.02	$ 0.33	$ (0.11)	$ (0.21)
Diluted earnings (loss) per share (in dollars per share)	$ 0.24	$ 0.02	$ 0.04	$ 0.03	$ 0.11	$ (0.35)	$ 0.10	$ 0.02	$ 0.33	$ (0.11)	$ (0.21)